Error implementing Support Library Action Bar

Question

I'm trying to implement the new v7 Support Library ActionBar. However, I can't get it to run properly.

Here's the exception

07-25 09:30:01.704: E/AndroidRuntime(9175): FATAL EXCEPTION: main
07-25 09:30:01.704: E/AndroidRuntime(9175): java.lang.NoClassDefFoundError: android.support.v7.appcompat.R$styleable
07-25 09:30:01.704: E/AndroidRuntime(9175):     at android.support.v7.app.ActionBarActivityDelegate.onCreate(ActionBarActivityDelegate.java:98)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at android.support.v7.app.ActionBarActivityDelegateICS.onCreate(ActionBarActivityDelegateICS.java:58)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:98)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at com.cidaut.termoweb.MainActivity.onCreate(MainActivity.java:23)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at android.app.Activity.performCreate(Activity.java:5133)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at android.os.Handler.dispatchMessage(Handler.java:99)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at android.os.Looper.loop(Looper.java:137)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at android.app.ActivityThread.main(ActivityThread.java:5103)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at java.lang.reflect.Method.invokeNative(Native Method)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at java.lang.reflect.Method.invoke(Method.java:525)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
07-25 09:30:01.704: E/AndroidRuntime(9175):     at dalvik.system.NativeStart.main(Native Method)

The problem happens at the super.onCreate(bundle) call at onCreate().

Here's all my theming related XML:

styled.xml

<?xml version="1.0" encoding="utf-8"?>

<resources>
    <style name="Theme.Termoweb" parent="@style/Theme.AppCompat.Light.DarkActionBar">
        <item name="actionBarItemBackground">@drawable/selectable_background_termoweb</item>
        <item name="popupMenuStyle">@style/PopupMenu.Termoweb</item>
        <item name="dropDownListViewStyle">@style/DropDownListView.Termoweb</item>
        <item name="actionBarTabStyle">@style/ActionBarTabStyle.Termoweb</item>
        <item name="actionDropDownStyle">@style/DropDownNav.Termoweb</item>
        <item name="actionBarStyle">@style/ActionBar.Solid.Termoweb</item>
        <item name="actionModeBackground">@drawable/cab_background_top_termoweb</item>
        <item name="actionModeSplitBackground">@drawable/cab_background_bottom_termoweb</item>
        <item name="actionModeCloseButtonStyle">@style/ActionButton.CloseMode.Termoweb</item>
        <!-- Light.DarkActionBar specific -->
        <item name="actionBarWidgetTheme">@style/Theme.Termoweb.Widget</item>
    </style>



    <style name="ActionBar.Solid.Termoweb" parent="@style/Widget.AppCompat.Light.ActionBar.Solid.Inverse">
        <item name="background">@drawable/ab_solid_termoweb</item>
        <item name="backgroundStacked">@drawable/ab_stacked_solid_termoweb</item>
        <item name="backgroundSplit">@drawable/ab_bottom_solid_termoweb</item>
        <item name="progressBarStyle">@style/ProgressBar.Termoweb</item>
    </style>


    <style name="ActionBar.Transparent.Termoweb" parent="@style/Widget.AppCompat.ActionBar">
        <item name="background">@drawable/ab_transparent_termoweb</item>
        <item name="progressBarStyle">@style/ProgressBar.Termoweb</item>
    </style>


    <style name="PopupMenu.Termoweb" parent="@style/Widget.AppCompat.ListView.Menu">
        <item name="popupBackground">@drawable/menu_dropdown_panel_termoweb</item>
    </style>


    <style name="DropDownListView.Termoweb" parent="@style/Widget.AppCompat.ListView.DropDown">
        <item name="listSelector">@drawable/selectable_background_termoweb</item>
    </style>


    <style name="ActionBarTabStyle.Termoweb" parent="@style/Widget.AppCompat.ActionBar.TabView">
        <item name="background">@drawable/tab_indicator_ab_termoweb</item>
    </style>


    <style name="DropDownNav.Termoweb" parent="@style/Widget.AppCompat.Spinner">
        <item name="background">@drawable/spinner_background_ab_termoweb</item>
        <item name="popupBackground">@drawable/menu_dropdown_panel_termoweb</item>
        <item name="dropDownSelector">@drawable/selectable_background_termoweb</item>
    </style>


    <style name="ProgressBar.Termoweb" parent="@style/Widget.AppCompat.ProgressBar.Horizontal">
        <item name="progressDrawable">@drawable/progress_horizontal_termoweb</item>
    </style>


    <style name="ActionButton.CloseMode.Termoweb" parent="@style/Widget.AppCompat.ActionButton.CloseMode">
        <item name="background">@drawable/btn_cab_done_termoweb</item>
    </style>


    <!-- this style is only referenced in a Light.DarkActionBar based theme -->
    <style name="Theme.Termoweb.Widget" parent="@style/Theme.AppCompat">
        <item name="popupMenuStyle">@style/PopupMenu.Termoweb</item>
        <item name="dropDownListViewStyle">@style/DropDownListView.Termoweb</item>
    </style>
</resources>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.cidaut.termoweb"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/Theme.Termoweb" >
        <activity
            android:name="com.cidaut.termoweb.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>

Answer 1

For those that don't like needing manual user effort in Eclipse in order to do a build from checkout, the magical change that Eclipse makes is to add a line to project.properties like:

android.library.reference.1=../android-support-v7-appcompat

This is enough to build your application from ant. You can do this in the source yourself, or via the Eclipse user interface - either way you can check it in to your version control system and successfully build from a fresh checkout of the source without requiring manual steps.

But you can instead make the path a sub-directory of your own project if that suits better, E.g.

android.library.reference.1=android-support-v7-appcompat

... and ...

cp -r $SDK/extras/android/support/v7/appcompat android-support-v7-appcompat

Note that Eclipse will still show various warnings until the sub-directory is also added [manually!] to Eclipse's workspace as a project. But an ant build will successfully build without using Eclipse.

Answer 2

So, how I solved this problem:

1. Import support library as a project from "sdk/extras/android/support/v7/appcompat".
2. Reference library in your project (for Eclipse, "Properties - Android - Add").
3. Build projects (for Eclipse, "Projects - Build All"). Make sure, you have "android.support.v7.appcompat" in your main project gen folder.
4. If it doesn't worked - clean and rebuild project.

Answer 3

This is how I solve the problem: rebuild the adroid-support-v7-appcompat library project in your eclipse workspace. Then build your own project again.

Answer 4

Check for R.java for appcompat v7 jar is present in your generated folders of your application

Answer 5

I think you should change your target version to 18 in the manifest.

android:targetSdkVersion="18"

Answer 6

In addition to BoredT's answer I added this line to res/values/styles.xml

<style name="AppTheme" parent="@style/Theme.AppCompat.Light">